<?php
$arr = array('a','b','c');
$arr2 = array('d', 'e', 'f');

foreach($arr as &$value){//习惯用$value或$val
	$value .= '4';
	//echo $value, "\n";
}
unset($value);
//都处理完毕我们在页面模版输出,首先输出$arr2
foreach($arr2 as $value){//习惯用$value或$val
	//echo $value;

}

//然后再这样输出 $arr;
foreach($arr as $value){//习惯用$value或$val
	echo $value, "\n";
}